Improved evaporator for saccharine juices



A. INGALLS.

Evaporating Pan.

` No. 35,238. Patented May 13, 18,62.

oolroooonone uo'ooojnonoo N. PETERS, Phoxa-Lilhogmpher, washmpnn, D.c.

`T0 all whom it nanny con/cern).-

Be. it known that I, ALFRED INGALLs, of

Juices, Ste.; and I do hereby declare that? the following is a full, clear, and exact description of the same,refer`encebeing had to the accompanying drawings, forming a part of Vthis i specication, in which- Y s "Figure lrepresents a longitudinal verticah section of my inventiomtaken in the plane indicated by the liney y, Fig. 8. Fig. 2 is a transl i verse vertical sectionV of the same, the plane of i section being indicated by the linex x, Fig. Y1.

Fig. 3 isa plan or top View of the same.

l i `Similar letters of reference indicate corresponding parts `iirthfe-several figures.

` This invention consists in the arrangement of three pans placed at different levels on the same furnace, in combination with three dampers and two ure-doors, in such a manner that the j` heat under each 'of the pans can be regulated at pleasure,r and that each pan can be emptiedwhenever itisfdesired without interrupting the operation'oftheothers.

Itconsistsyalso, in the arrangement of a movable skimming device fitting on the edges of the first two pans, in combination with seats or l recessescutinto said edges, in such a manner that thefscum, as itrises on-the surface of the lmice, `can be sweptoff in an easy and expedi-Y `,tious manner.

To enable those skilled in the art to make y and `usemy invention, I will proceed to describeits construction and operation with refs erence tothe drawings.

' "The pansA B G are arranged onthe furnace i, D,which.consists of two main ilues, ab, and the central iiue, `c. `The line a extends from thefirei s door dunder the lowestpan, C, to the second or l middle pan, B, and under this pan to the flue b, which extends under the wholelength ofthe up-` tiper. or first'pan, A, and which communicates l with the chimney An additional fire-door, l c, leads tothat endof the `iue b opposite the chimney@ The flue a communicates by an ap- 1 erture,"y"',with` the central iiue, c, and said aperture can be opened or closed at pleasure by meansof a damper, F, which slidesbetween l suitable guides, g, and the position of which is f UNITED-[STATES Independence, in the county of Buchanan and y State of Iowa, haveinvented a new and Improved Apparatus for Evaporating Sacoharine PATENT s OFFICE.

I f s ALFRED INGALLS, Vor INDEPENDENCE, IOWA. ,lMPROVEDEVAPORATOR FOR SACCHAR'INEJUICES.

x `Y Specification forming part of Letters Patent No. 35,238, dated May 13, l862.

regulated by a handle, 71. The same damper also serves to regulate the communication between the flues a and b. Asecond damper, G,

which is suspended from a rock-shaft, i, and to,

which the desired position is given by a handle, j, on the side of the f'nrnace, serves to cut off the heat from the second pan, and a horizontally-sliding damper, H, which is supported by brackets 7c on the sides ofthe flue a, regulates the heat under the pan A. The pans A B C communicate with each other by suitable gates, ZZ', and their edges are provided with recesses or seats ma m a', to receive the skimming deviceI. This device consists of a perforated bottom, o, provided with a rim, p, and narrowing down towardone end, so as to form a spout, q. On one side a portion of the rim p is turned over, so as to form a hook, @which catches over the edge of the pan to which the skimming dey vice is to be attached. The recesses m m in the edge of pans A B receive the hook r ofthe skimming device, and the spout q of said device, when the same is att-ached to the pan A, rests in the recess n in the end of the pan B, and

when the skimming device is attached to the pan B said spout rests in the recessn in the side of the pan C.

The operation is as follows: The skimming device is placed into theseats or recesses m a', l

and the pan A is iilled with raw juice as full as it will hold, and brought near to the boi1` ing-point, the temperature being so regulated by means of the dampers F G that the juiceis not allowedto boil fully. By this operation the scum is caused to rise, and when fully raised to the surface it is floated off into the skimming device I by means of a fiat piece of 'wood or any other suitable instrument. The

scumis thereby floated off in a rcompact mass,

and it is not broken up and permitted to mingie again with the juice,which is the great objection to the ordinary method of skimming,

and, furthermore, the skimming canbe effected v in less time by my method than it can in the or- After the scum is all swept oif dinary way. from the pan A the gate Zis to be opened and the juice drawn off into pan,B,whiLeasecond batch is let into pan A. Theskimming devicev is now placed in its seat'm a', between the pans B C, and the temperature is raised to the desired degree without, however, allowing the cable, the more rapidly the better; and when juice to boil, and when the scum has all risen it is swept olf as before. Then the gate Z is opened, and the juice is drawn into the pan C and evaporated as rapidly as may be practithe article is nished the door d is opened and the damper H is inserted, thereby allowing the sirup to be drawn off Without being scorched. \Vhenever one of the pans is emptied,it is iininediately filled with another batch, which has followed it round and is waiting in the next preceding` pan. Vhen the operation is coninienced, or whenever the pans B C may be e1npty, a re may be built under the pan A by opening` the additional lire-door c, or the pans B C may be filled with Water to protect thein until the first batch of `iuice in the pan A is fully cleansed, and the iire may now be built in the usual place. The pans and furnace can all be made of metal, if it is desired to have them portable; but if stationary the furnace can be made of brick or stone and the sides of the pans of Wood and their bottoms of metal, thereby enabling any one to get it up at a triiling cost.

Having thus fully described my invention, what I cla-im as new, and desire to secure by Letters Patent, is-

l. The arrangement of three pans, A B C, placed at different levels on the furnace D, in combination with dampers F G H and iiredoors d e, constructed and operating as and for the purpose shown and described.

2. The arrangement of the skimming device I, in combination with seais m u m a on the edges of the pans A B C, constructed and operatiner substantially as and for the purpose herein set forth.

ALFRED INGALLS.

XViln esses:

l. A. 'WoRD, \V. CHANDLER. 

